I've never been upgraded at a RC, and even the "standard room" upgrades are at best a view upgrade, not room size.
Most of them have offered to let me try their club lounge for $100/day. No thanks!
What is most galling to me is that you don't receive points for meals, etc. at a RC. It's one thing to expect a free breakfast, it's quite another to get zero points for shelling out $25 - $50 for breakfast....
Billy